| Issuer | Australia |
| Year | 2009 |
| Type | Non-circulating coins |
| Value | 50 Cents |
| Currency | Dollar (1966-date) |
| Composition | Silver (.999) |
| Weight | 15.55 g |
| Dimensions | 32.1 mm |
| Thickness | 3 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#1750 |
| Obverse description | 4th portrait of Queen Elizabeth II facing right wearing the Girls of Great Britain and Ireland Tiara |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II AUSTRALIA IRB 1/2 OZ. 999 SILVER 2009 50 CENTS |
| Reverse description | Two cows grazing, Hills in the background, Chinese character for Cow above |
| Reverse script | Chinese, Latin |
| Reverse lettering | 牛 P Year of the Ox |
| Edge | Reeded |
| Mint | P Perth Mint, Australia(1899-date) |
| Mintage | 2009 P - BU - 17 674 2009 P - BU - Colourised - 47 018 2009 P - Proof - In 3 Coin Set - 340 |
| Catalog ID | 8322377500 |
| Comments |
